Lubricator.



PATENTED FEB. 13, 1906.

0. 0. DODGE. LUBRIOATOR.

APPLICATION TILED OUT. 16. 1905.

{6' D'CI/Q; c762 Giza. C 5960 IIHHIIH III II II I I "III! 665585,mczaha.

UNITED STATES PATENT OFFICE.

CHARLES C. DODGE, OF NEVVARK,.NEWV JERSEY, ASSIGNOR TO THE DODGELUBRICATOR COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

LUBRICATOR.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed October 16, 1905. Serial No. 282,881.

To all whom it may concern:

Be it known that 1, CHARLES C. DODGE, of Newark, in the county of Essexand State of New Jersey, have invented certain new and usefulImprovements in Lubricators, of Which the following is a specification.

This invention has relation to force-feed lubricators of the type of theone illustrated in my co ending application, Serial No. 234,736, fi edNovember 29, 1904, and has for its object to provide certainimprovements therein, in consequence of which the construction may besimplified, the labor of production reduced, and the efliciency ofoperation enhanced.

To these ends the invention consists ofcertain novel features ofconstruction and arrangement of parts, as illustrated by theaccompanying drawings, described in the following specification, andparticularized in the claims.

On the drawings, Figure 1 represents in plan view with the cover removeda convenient form of lubricator embodying my invention. Fig. 2represents a section on the line 2 2 of Fi 1. Fig. 3 re resents asection through the carrier on t e same line and shows the plunger nearthe end of its inward stroke. Fig. 4 re resents the carrier and theparts thereon. F ig. 5 is a fragmentary view of the bottom of the tankor reservoir.

Referring to the drawings, indicates a reservoir for lubricant which maybe of any desired form or material. Preferably it is formed with anysuitable cover (not shown) and with a base 11, to which the cover may beattached by long bolts or screws 12. The sides of the reservoir may beformed of any suitable material, and the reservoir itself may be'eitherround or rectangular in plan view. The base 11 is provided with adepressed or cup-like portion 13, which is adapted to receive theoperating mechanism. The bottom 14 of the cup 13 forms a seat for acarrier 15 and is provided with a series of outletducts 16, arranged insubstantially a circle. Connected to the ducts 16 are conduits 17,secured to the under side of the cup by packingscrews 18. Through theseducts and conduits the lubricant is delivered to the various bearings,or working surfaces which are to be lubricated.

Surrounding the inner mouth of each of the ducts 16 there is an annularboss 19, the upper surfaces of said bosses being all in the same plane,so that the carrier 15 rests against them so as to normally close theducts 16 except at predetermined times, as hereinafter described.Arranged in the center of the circle formed by the ducts 16 is a fixedupright pin or arbor 20, which is secured to the bottom of the cup-likeportion 13 of the base and upon which the carrier 15 is journaled. Thiscarrier is provided on its periphery with worm-teeth 21, so that it maybe rotated by a worm 22, formed upon a shaft 23, arranged tangentiallyto the carrier. The worm itself is located in a depression or recessformed in the base 11, as shown in Fig. 1. The shaft 23 is passedthrough an aperture in the side or bottom portion of the base and isheld in place by a shouldered sleeve 24, into a peripheral grooveofwhich a screw 25 is passed downwardly through the base. threaded sleeve26 with packing is utilized to prevent leakage of the lubricant past thebearings of the shaft 23. On the end of the shaft is placed a belt-wheel27, which may be connected thereto in any suitable or convenient way totransmit power from some roving element.

The carrier 15, which is substantially in the form of a disk, is cast onits upper surface with a raised portion 28, which is bored out toconstitute a horizontal pump-cylinder 29, the end of which communicateswith a discharge-duct 30 at right angles thereto. Said discharge-duct isadapted to register successively with the outlet-ducts 16. The bottom ofthe carrier is smooth, and, as has been said, the upper surfaces of thebosses 19 are smooth, so that the carrier fits closely against its seatthus formed by the bosses 19 and prevents the escape of lubricant.

In the pump-cylinder there is a piston or plunger 31, the outer end ofwhich is bent back upon itself to form a parallel portion oroperating-stem 32, which passes through a guiding ear or lug 33, formedon the top of the carrier. A clip 34 is attached to the bent end of thepiston, andit is connected by a tension-spring 35 with a lug 36 on thecarrier 15. This spring tends to maintain the piston at the inner end ofits movement, as shown in Fig. 2. The clip itself consists of a T-shapedpiece of metal with apertures in the ends of A su1tably-.

the head, through which the piston 31 and the stem 32 are passed, afterwhich the clip is bent into the form shown in Figs. 3 and 4. Above thecarrier is arranged a cam-disk 37, which is keyed upon the arbor 20, soas to be held against rotation. On the threaded end of the arbor is anut 38 and washer 39, between which and the cam there is acompression-spring 40. This spring bearing against the cam 37 and thecarrier 15 holds the latter upon its seat. The cam-disk 37 is providedwith a plurality of projections or cam-rises 371, which are equal innumber to the outletducts 16. The operating-stem 32 of the piston 31 isso located radially of the carrier as to have its end bear against thecam, in consequence of which when the carrier is rotated in thedirection of the arrow in Fig. 1 the piston will be moved outwardagainst the tension of the spring until it rides off of the end of thecam projection, immediately upon which the spring will advance thepiston so as to force out the lubricant contained in the cylinder.During the time that the disk is rotating to carry the channel or duct30 from one of the outlet-ducts 16 to the next succeeding duct 16 thepiston Will be forced outwardly or retracted, as described, the end ofthe duct 30 being open as it passes from one of the bosses 19 to thenext succeeding boss, so that the lubricant will be drawn into thepump-cylinder by the outward movement of the piston. The projections 371 are preferably so formed that during the travel of the rod 32 overthem the pump-piston will not be appreciably moved during the time thatthe mouth of the duct is traveling across the face of one of the bosses19.

It will be observed that all of the operating parts of the mechanism aremounted and located upon the base 11. The parts are all compact andsimple in construction. For instance, as stated, the piston 31 and itsoperating-stem 32 are formed of one cylindrical piece of metal, whichmay be bent in proper form. The bottom face of the carrier is flat, andit is unnecessary to grind the opposing faces of the carrier and itsseat, a simple turning operation enabling them to be fitted Withsufiicient accuracy. By mounting the controlling-cam and the carrierdirectly on the arbor I provide a more compact arrangement than wherethe controlling cam is formed of an annular ring.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, although without attempting to setforth all of the forms in which it may be made or all of the modes ofits use, I declare that what I claim is- 1. In a lubricator such asdescribed, the combination with a reservoir for the lubricant having aplurality of discharge-ducts, of a rotary pump-carrier and pump locatedin the reservoir and having a duct adapted to register successively withthe first-mentioned ducts, an arbor on which the said pump-carrier issupported, and a fixed cam on said arbor having projections foroperating the pump, and means for rotating the carrier.

2. In a lubricator such as described, the combination with a reservoirfor the lubricant having a plurality of discharge-ducts whose mouths arein the same plane, of a carrier having a flat under face and having aduct adapted to register successively with the discharge-ducts, a pumpextending across the said carrier, means for rotating the carrier, andmeans for operating the pump.

3. In a lubricator such as described, the combination with a reservoirhaving a plurality of annular bosses, with discharge openings or ducts,said bosses all having their faces in the same plane, of a rotarypumpcarrier located in the reservoir and having a flat bottom faceseated upon said bosses, said carrier having a pump and a duct from saidpump adapted to register successively with the said openings, and meansfor rotating the carrier and. operating the pump.

4. In a lubricator, such as described, a reservoir having a base with acup-shaped depression, said depression having in its bottom a series ofbosses with outlet-ducts therethrough, a rotary pump-carrier arranged inthe cup-shaped depression and seated upon said bosses and having a pumpdischargeduct adapted to register successively with the outlet-ducts, apump on said carrier, and means for rotating the carrier and operatingsaid pump.

5. In a lubricator such as described, a reservoir having a base providedwith a series of outlet-ducts, a fixed arbor secured to said base, apump-carrier mounted to turn on said arbor and having a pump dischargeduct adapted to register successively with said outlet-ducts,'a camfixed against rotation on said arbor and having cam-teeth, a pump onsaid carrier whose plunger is adapted to be controlled by saidcam-teeth, and means for rotating said carrier.

6. In a lubricator, such as described, a reservoir having its baseprovided with a series of outlet-ducts, an arbor, a pump-carrierrotatable on said arbor and seated against the mouths of saidoutlet-ducts, said carrier having a pump discharge-duct adapted toregister successively with said outlet ducts, a pump on said carriercomprising a cylinder and a piston, an operating-stem connected to saidpiston, a spring for moving the piston in one direction, a cam supportedby said arbor and held thereby against rotation for moving the piston inthe opposite direction, and means for rotating said pump-carrier.

7. In a lubricator, such as described, the combination with a reservoir-base having outlet -ducts, of a fixed upright arbor, a pump carrierrotatable on said arbor and seated against said outlet-ducts, saidcarrier having a pump and a pump discharge-duct adapted to registersuccessively with said outlet-ducts, a non-rotary cam mounted on saidarbor above said pump-carrier and having teeth on its periphery foroperating said pump, an adjustable abutment on said arbor, and a springinterposed between said abutment and said cam for yieldingly forcingsaid carrier against its seat.

8. In a lubricator, such as described, the combination of areservoir-base, an upright arbor fixed to said base, a rotary carrierjournaled on said arbor, a horizontal pump on said carrier to one sideof said arbor, an operating-stem connected to the pump-plunger andarranged radially of the carrier, and a disk on said arbor havingcam-teeth on its periphery to be engaged by said operatingstem,substantially as described.

9. In a lubricator such as described, the combination of areservoir-base, an upright arbor fixed to said base, a rotary carrierjournaled on said arbor, a horizontal pum on said carrier on one side ofsaid arbor, a orizontal operating-stem for the ump-plunger, and fixedprojections with wiiich said stem cooperates to control the plunger.

In testimony whereof I have afiixed my signature in presence of twowitnesses.

CHARLES C. DODGE.

Witnesses:

M. B. MAY, 0. O. STEoHER.

